TY - JOUR
T1 - Adaptive power allocation for uplink non-orthogonal multiple access with semi-grant-free transmission
AU - Yang, Zheng
AU - Xu, Peng
AU - Ahmed Hussein, Jamal
AU - Wu, Yi
AU - Ding, Zhiguo
AU - Fan, Pingzhi
N1 - Funding Information:
Manuscript received May 4, 2020; revised June 7, 2020; accepted June 8, 2020. Date of publication June 16, 2020; date of current version October 7, 2020. The work of Zheng Yang and Yi Wu was supported in part by the National Natural Science Foundation of China under Grant U1805262, Grant 61701118, and Grant 61871131, and in part by the Natural Science Foundation of Fujian Province, China, under Grant 2018J05101. The work of Peng Xu was supported in part by the National Natural Science Foundation of China under Grant 61701066, and in part by the Chongqing Natural Science Foundation Project under Grant cstc2019jcyj-msxmX0032. The work of Pingzhi Fan was supported in part by NSFC Project under Grant 61731017, and in part by the National Key Research and Development Project under Grant 2018YFB1801104. The associate editor coordinating the review of this article and approving it for publication was P. D. Diamantoulakis. (Corresponding author: Peng Xu.) Zheng Yang and Yi Wu are with the Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application, Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou 350007, China (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 2012 IEEE.
PY - 2020/10
Y1 - 2020/10
N2 - In this letter, an adaptive power allocation (APA) strategy is proposed for an uplink non-orthogonal multiple access (NOMA) with semi-grant-free (SGF) transmission, where one grant-based user (GBU) shares the same resource with other grant-free users (GFUs) using grant-based scheme and grant-free scheme, respectively. The proposed strategy is based on the fact that the quality of service for the GBU can be strictly guaranteed if its instantaneous data rate is larger than the target date rate. Compared to existing works, the derived analytical results for the proposed APA strategy in uplink NOMA-SGF networks show that the outage probability at a low signal-to-noise ratio for the GBU can be significantly reduced, and full diversity gain for the GFUs can be achieved. Finally, the accuracy of the theoretical results is validated using Monte Carlo simulations.
AB - In this letter, an adaptive power allocation (APA) strategy is proposed for an uplink non-orthogonal multiple access (NOMA) with semi-grant-free (SGF) transmission, where one grant-based user (GBU) shares the same resource with other grant-free users (GFUs) using grant-based scheme and grant-free scheme, respectively. The proposed strategy is based on the fact that the quality of service for the GBU can be strictly guaranteed if its instantaneous data rate is larger than the target date rate. Compared to existing works, the derived analytical results for the proposed APA strategy in uplink NOMA-SGF networks show that the outage probability at a low signal-to-noise ratio for the GBU can be significantly reduced, and full diversity gain for the GFUs can be achieved. Finally, the accuracy of the theoretical results is validated using Monte Carlo simulations.
KW - adaptive power allocation
KW - Non-orthogonal multiple access
KW - outage probability
KW - semi-grant-free transmission
UR - http://www.scopus.com/inward/record.url?scp=85092724506&partnerID=8YFLogxK
U2 - 10.1109/LWC.2020.3002800
DO - 10.1109/LWC.2020.3002800
M3 - Article
AN - SCOPUS:85092724506
SN - 2162-2337
VL - 9
SP - 1725
EP - 1729
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 10
M1 - 9119121
ER -